The Possible Collision of a Large Meteorite with Earth 65

question 135

Multiple Choice

The possible collision of a large meteorite with Earth 65 million years ago may explain

• A) the existence of Gondwana.
• B) continental drift, according to Alfred Wegener.
• C) the mass extinction that killed off the dinosaurs.
• D) contemporary atmospheric conditions on Earth.
• E) the rise of the Rocky Mountains and Andes Mountains.

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Definitions:

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The measure of the efficiency of production of goods or services, often calculated as the output per unit of input.